Artefacto

, sacrificar el Sello contaminado: Ganas vidas igual al total de vidas perdidas por todos los jugadores este turno. (El daño causa pérdida de vida.)
Tainted Sigil’s ability checks only whether life was lost. It doesn’t care whether life was also gained. For example, say one player lost 4 life during the turn and no one else lost any, but that same player also gained 6 life that turn. That player has a higher life total than they started the turn with — but Tainted Sigil’s ability counts only the life loss, so you’ll gain 4 life.